TOTAL VOLUME:

$150.4b

24H VOL:

$142,976,311

24H TRANSACTIONS:

2,859,322,643

OPEN INTEREST:

$1,735,079,337

467,728

Markets across

35,810

events

MATCHED EVENTS:

3,446

PLATFORM COVERAGE:

5

Polymarket:

38%

VS.

Kalshi:

62%

BETA
Dashboards
Insights
Indices
API
Tour
All
Trending
Breaking
New
Ending Soon
Politics
Sports
Crypto
Companies
Elections
Financials
Economics
Other
Entertainment
Science and Technology
CPI in December
kalshi

What will CPI be in December?

Sep 17, 2026, 11:30 AM EST - Jan 13, 2027, 9:56 AM EST
Total volume:
$104,991
Volume 24h:
$14,271
24%
Liquidity:
N/AN/A
Open interest:
$49,486
1%

Above -0.1%

 - Kalshi

Above -0.1% - Kalshi

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolves Jan 13, 2027

Will CPI rise more than -0.1% in December 2026?

92%chance
Amount

$

Trade on
kalshi

Trade on Kalshi

Join Kalshi and score $25 for your first trade.At 94¢ buys you 106 shares | Odds: 92% Total Payout: $106 | Net Profit: $6 Multiplier: 1.06x | ROI: 6% | APY: 34% 78 days to resolution
You will be redirected to the platform to complete this trade.
Outcome
Trade
Chance %
Price
Spread
Liquidity
Volume
24h
7d
Open Interest
Ends in
Result
kalshi

Above -0.1%

Trade
92%
Yes 94¢No 7¢
1¢
N/A
$12,714
0%
14%
$3,997
2mo 2w 4d
active
kalshi

Above 0.0%

Trade
90%
Yes 91¢No 10¢
1¢
N/A
$10,076
0%
13%
$3,740
2mo 2w 4d
active
kalshi

Above 0.1%

Trade
74%
4%
Yes 80¢No 23¢
3¢
N/A
$4,251
8%
519%
$1,673
2mo 2w 4d
active
kalshi

Above 0.2%

Trade
65%
Yes 65¢No 46¢
11¢
N/A
$4,463
1%
11%
$1,989
2mo 2w 4d
active
kalshi

Above 0.3%

Trade
37%
Yes 39¢No 66¢
5¢
N/A
$8,784
0%
46%
$2,656
2mo 2w 4d
active
kalshi

Above 0.4%

Trade
18%
8%
Yes 30¢No 81¢
11¢
N/A
$11,857
12%
112%
$4,173
2mo 2w 4d
active
kalshi

Above 0.5%

Trade
13%
Yes 13¢No 88¢
1¢
N/A
$11,870
4%
18%
$7,172
2mo 2w 4d
active
kalshi

Above 0.6%

Trade
8%
Yes 10¢No 92¢
2¢
N/A
$10,914
24%
34%
$4,697
2mo 2w 4d
active
kalshi

Above 0.7%

Trade
7%
Yes 9¢No 93¢
2¢
N/A
$8,533
0%
20%
$4,229
2mo 2w 4d
active
kalshi

Above 0.8%

Trade
5%
Yes 6¢No 95¢
1¢
N/A
$13,674
0%
33%
$9,261
2mo 2w 4d
active
kalshi

Above 0.9%

Trade
5%
Yes 6¢No 95¢
1¢
N/A
$7,856
0%
307%
$5,899
2mo 2w 4d
active
Total markets: 11

Description

This event tracks changes in the Consumer Price Index (CPI) for December 2026, reflecting how the average price level of goods and services fluctuates over that month. The CPI serves as a key indicator of inflation, helping economists and policymakers gauge economic health and make informed decisions.

Kalshi

All markets resolve based on the Consumer Price Index (CPI) value for December 2026, reported to one decimal place. Each market has a specific threshold: if the CPI increase exceeds the threshold (ranging from -0.1% to 0.9%), the market resolves to Yes; otherwise, it resolves to No. The official Expiration Value is the single-decimal CPI figure published by the designated Source Agency. If a federal government shutdown delays data release and compromises the reliability of the Source Agency, the market’s Expiration Date is extended to the earlier of the Underlying data release or six months after the shutdown ends, ensuring timely and accurate resolution.

Frequently asked questions

On Kalshi, the dashboard for the December CPI market tracks the current odds of various outcomes for the Consumer Price Index in December. You’ll find the implied probabilities, a price history chart showing how the market has moved over time, and the 24-hour trading volume, which currently stands at $4,194. Total volume for this market is $104,991. This allows traders to gauge market sentiment and identify potential trading opportunities related to inflation expectations.

Currently, prediction market odds reflect a different view than many traditional analyst forecasts for December inflation. While many economists predict a continued cooling of inflation, this market suggests a more uncertain outlook. It’s important to remember that prediction markets represent the collective wisdom of traders who have skin in the game, potentially incorporating information not fully reflected in standard economic models. This difference in perspective can be valuable for understanding the range of possible outcomes and the associated risks.

On Kalshi, this market is priced using a continuous double auction. Traders submit bids (buy orders) and asks (sell orders), and the market price fluctuates based on supply and demand. Essentially, the price reflects the probability that a particular CPI value will be reported in December. On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. The price is determined solely by the actions of traders on Kalshi, and represents their collective assessment of the likely CPI reading. The more traders believe a specific outcome is likely, the higher the price for that outcome will climb.

This market resolves around Jan 13, 2027, with the outcome confirmed once the official CPI data for December is verifiable from credible public reporting. The Bureau of Labor Statistics (BLS) releases the CPI data, and that will serve as the basis for determining the winning outcome in this market. Traders will be able to see the final settlement price and whether their predictions were accurate shortly after the BLS release. It’s important to monitor economic news leading up to this date as it may impact trading activity.

Several key signals and events could significantly move this market before it resolves. Unexpected changes in employment figures, particularly the monthly jobs report, often influence inflation expectations. Geopolitical events, such as shifts in energy prices due to international conflicts, can also have a substantial impact. Furthermore, statements from the Federal Reserve regarding monetary policy, including potential interest rate adjustments, are closely watched by traders. Any surprising data releases related to producer price index (PPI) or consumer sentiment could also trigger volatility in this market.